Ruitian Li

Oct 24, 2024 | epjc.epj.org | Aojia Xu |Ruitian Li |Xuan Luo |Optoelectronics Engineering

Eur. Phys. J.

Sep 18, 2024 | link.aps.org | Ruitian Li |Xuan Luo |Optoelectronics Engineering |Aojia Xu

We study the production of hyperon resonances in the π+p→pa0+ϕ reaction within an effective Lagrangian approach. The model includes the production of Δ(1940) and Δ(1920) in the intermediate state excited by the ρ and p exchanges between the initial proton and π meson. Because of the large contribution of ρ exchange in Δ(1940) production, Δ(1940) is found to be a significant contribution near the threshold in this reaction.

Jan 3, 2024 | link.aps.org | Xuan Luo |Optoelectronics Engineering |Ruitian Li |Hao Sun

Prompted by the recent discoveries of Tcs¯0(2900)++ in the Ds+π+ invariant mass distribution of B+→D−Ds+π+ process, we present a model that hopes to help us investigate the nature of Tcs¯0(2900)++ by reproducing the mass distribution of D−π+, Ds+π+, and D−Ds+ in B+→D−Ds+π+ decays. The structure of the triangular singularity peak generated from the χc1D*+K*+ loop near the D*+K*+ threshold is considered in our model may be the experimentally discovered resonancelike state structure Tcs¯0(2900)++.